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aai-en u ARCHIBALD .,H.l cRozIER, o F oswneo;l New YRK. t

Letters Patent No. 71,461, dated November 26, i i

` IMPROVEMENT INl wainnwHEBLs;

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',Be itl known that I, ARcHIBAnn H. Caozlnn, of the city of Oswego, Oswegov county',yState` of VNew Yorlr, have invented certain new and useful Improvements in Water-Wheels and I 'do hereby-,declare the following descriptionand accompanying drawings ar'esuicicnt to enable any person skilled in the artor'siencefto `which YVit most nearly appertainsV to make and 4use my'said-invention br improvements without; `further"invention `or v experiment. p i 1 i I k The nature of my invention-and improvements consists in making the opening in the` bottom of the: curb k enclosinggthe wheel, through which-'the water escapes, scroll-shapedin a reverse dinpctionto that` of thescr l `around the wheel-through which the water enters, and in -curving the inner `edgeof said bttor'naround this fopening upward for about one-fourth of `the circumferenccfand curving it downward for the remaining threeffourthspthe `upward curvature being intended to prevent the water from 4escaping too soon, andthe downwa to facilitate its escape at the'proper points; also iny placing valves in the disk 4opening downwznjds` to admit `^to facilitate the escape of the water from the wheehand at the same time preventing thc'wcter from flowi up through' the disk. f i y p y I i i i lIn the following description, the-accompanying drawings, making part of this specification, are refcrredto, of which` i i Figure 1 is a plan of the-top, Figure 2 a plantof'the bottom, and Figure 3 a.` vertical section through the line z z.' A is .the scroll-shaped curb of my improved water-wheel, into which the waterisadmittcd at B,and, impig ing `against the buckets or floats. C, revolves the wheel. DA is an'opening in the bcttomvof the curbfor the i water to escape through. Itis also scroll-shaped, butvits position or direction around the whccl stlic `reverse of that of the curb, through which the water is admitted, its widestv part being opposite the piointat whichthe water first enters at B. From. this point the inner4 edge of the bottom of the c'urb is curved upward tofmcct t the rim of the wheel, as seen at a, iig. 3and is continued to form a close or .water-,tight joint, with` the .ri

for about one-eighth of the circumference of the Vscroll-shaped opening,`more or less,'in'` order-,to prevent the escape of thefwater before ithas produced its proper effect upon the` buckets, butcurving less4 and-less as it proceeds, it becomes ilator horizontal atbbout one-fourth of the circumference fomrwherc it commenced, and then' immediately begins to,curvc downward, as seen at Al5,`{ig.' 3, and so continues, thencurvature gradually increasing through the rest of the circumference, thus facilitating the 'escapeof the water when it has `ceased to act` in propelling the wheel. The buckets areV placed on the rim or cylinder E, inclining forward in `the direction in which the wheel revolves, as 'seen in iig. 2, so as to form an an lc of about fortyflve degrees,"with a radial line pziissing through the heel or inner edge of 'the bucket.` This causes the water` to tend towards the louter` end of the bucket, where it will produce the greatest effect, and inakes it less likely tovrecoil against the following bucket, which would retard the wheel. t VThe disk F, formiugthiatop of the wheel, is curved 'dowm ward at the` inner edge', as seen at c, tig. 3, in'order to contract `the'water-spaces between the buckets near the cylinder, and throw'a greater portion of the water against thel outer end of thebucketto produce the greater eiect, and also to facilitate its escape from the Wheel. In this disk or cover are apertures one ovcrfpeach space between two adjacent buckets, covered with valves N, shown lin dotted lines, opening downwards, th- Vfreely admitting the air, so as to allow the waterfto escape from the wheelat nthe proper'point, but `preventin the water Vfrom rising through the coverat those points where it may press upward against it, as on its rst admissionvtoth'e wheel. G Gareiarms, connecting the cylinder E with the shaft H, which'isf heldin position by Vthespider-frame I, and supported by thestep lheld by the fram'eK.` The arms GG are nttencd in,shape,tbut slightly twisted or'spiral, being horizontal i-n position where they j'oin the shaft, and, the' forward edge` gradually 'rising towardsthe cylinder-of the wheel, the end connects with the cylinderat an angleof aboutgthirtyor forty degreesy with the horizon. By thisarrangement the arms tend to p res's` the wateriin the central Vapart the wheel downward as they revo1ve,'the` weight of the wheel and shaft bcingitat `the same time partiallysupported by the water, and the friction `of thelpivot in the step J lessened. l, p p

I claim ,the bottom of the curb, having its inner edge, around the scroll-shaped opening therein, curved i upward-for a portion of the` circumference, and curved downward for thefrcmaining portioll Substantially as: i described, andfor the purposes set forth. I I p i Y I claim `the `openings in the top of the wheel, `with -valves opening doynward to `prevent the waterFfrom i iiowing up,but admitting theair freely downward to facilitate the escape of the water from the buckets.-

ARCHIBALD jH; CRozIEa Witnesses: 'i I t t WM. DENNIS, J DENNIS, Jr. 

